Cargando…

Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor

In order to improve the image quality of the aerial optoelectronic sensor over a wide range of temperature changes, high thermal adaptability of the primary mirror as the critical components is considered. Integrated optomechanical analysis and optimization for mounting primary mirrors are carried o...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Meijun, Lu, Qipeng, Tian, Haonan, Wang, Dejiang, Chen, Cheng, Wang, Xin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659566/
https://www.ncbi.nlm.nih.gov/pubmed/34883996
http://dx.doi.org/10.3390/s21237993
_version_ 1784612993475018752
author Zhang, Meijun
Lu, Qipeng
Tian, Haonan
Wang, Dejiang
Chen, Cheng
Wang, Xin
author_facet Zhang, Meijun
Lu, Qipeng
Tian, Haonan
Wang, Dejiang
Chen, Cheng
Wang, Xin
author_sort Zhang, Meijun
collection PubMed
description In order to improve the image quality of the aerial optoelectronic sensor over a wide range of temperature changes, high thermal adaptability of the primary mirror as the critical components is considered. Integrated optomechanical analysis and optimization for mounting primary mirrors are carried out. The mirror surface shape error caused by uniform temperature decrease was treated as the objective function, and the fundamental frequency of the mirror assembly and the surface shape error caused by gravity parallel or vertical to the optical axis are taken as the constraints. A detailed size optimization is conducted to optimize its dimension parameters. Sensitivities of the optical system performance with respect to the size parameters are further evaluated. The configuration of the primary mirror and the flexure are obtained. The simulated optimization results show that the size parameters differently affect the optical performance and which factors are the key. The mirror surface shape error under 30 °C uniform temperature decrease effectively decreased from 26.5 nm to 11.6 nm, despite the weight of the primary mirror assembly increases by 0.3 kg. Compared to the initial design, the value of the system’s modulation transfer function (0° field angle) is improved from 0.15 to 0.21. Namely, the optical performance of the camera under thermal load has been enhanced and thermal adaptability of the primary mirror has been obviously reinforced after optimization. Based on the optimized results, a prototype of the primary mirror assembly is manufactured and assembled. A ground thermal test was conducted to verify difference in imaging quality at room and low temperature, respectively. The image quality of the camera meets the requirements of the index despite degrading.
format Online
Article
Text
id pubmed-8659566
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-86595662021-12-10 Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor Zhang, Meijun Lu, Qipeng Tian, Haonan Wang, Dejiang Chen, Cheng Wang, Xin Sensors (Basel) Article In order to improve the image quality of the aerial optoelectronic sensor over a wide range of temperature changes, high thermal adaptability of the primary mirror as the critical components is considered. Integrated optomechanical analysis and optimization for mounting primary mirrors are carried out. The mirror surface shape error caused by uniform temperature decrease was treated as the objective function, and the fundamental frequency of the mirror assembly and the surface shape error caused by gravity parallel or vertical to the optical axis are taken as the constraints. A detailed size optimization is conducted to optimize its dimension parameters. Sensitivities of the optical system performance with respect to the size parameters are further evaluated. The configuration of the primary mirror and the flexure are obtained. The simulated optimization results show that the size parameters differently affect the optical performance and which factors are the key. The mirror surface shape error under 30 °C uniform temperature decrease effectively decreased from 26.5 nm to 11.6 nm, despite the weight of the primary mirror assembly increases by 0.3 kg. Compared to the initial design, the value of the system’s modulation transfer function (0° field angle) is improved from 0.15 to 0.21. Namely, the optical performance of the camera under thermal load has been enhanced and thermal adaptability of the primary mirror has been obviously reinforced after optimization. Based on the optimized results, a prototype of the primary mirror assembly is manufactured and assembled. A ground thermal test was conducted to verify difference in imaging quality at room and low temperature, respectively. The image quality of the camera meets the requirements of the index despite degrading. MDPI 2021-11-30 /pmc/articles/PMC8659566/ /pubmed/34883996 http://dx.doi.org/10.3390/s21237993 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Meijun
Lu, Qipeng
Tian, Haonan
Wang, Dejiang
Chen, Cheng
Wang, Xin
Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor
title Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor
title_full Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor
title_fullStr Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor
title_full_unstemmed Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor
title_short Design and Optimization for Mounting Primary Mirror with Reduced Sensitivity to Temperature Change in an Aerial Optoelectronic Sensor
title_sort design and optimization for mounting primary mirror with reduced sensitivity to temperature change in an aerial optoelectronic sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659566/
https://www.ncbi.nlm.nih.gov/pubmed/34883996
http://dx.doi.org/10.3390/s21237993
work_keys_str_mv AT zhangmeijun designandoptimizationformountingprimarymirrorwithreducedsensitivitytotemperaturechangeinanaerialoptoelectronicsensor
AT luqipeng designandoptimizationformountingprimarymirrorwithreducedsensitivitytotemperaturechangeinanaerialoptoelectronicsensor
AT tianhaonan designandoptimizationformountingprimarymirrorwithreducedsensitivitytotemperaturechangeinanaerialoptoelectronicsensor
AT wangdejiang designandoptimizationformountingprimarymirrorwithreducedsensitivitytotemperaturechangeinanaerialoptoelectronicsensor
AT chencheng designandoptimizationformountingprimarymirrorwithreducedsensitivitytotemperaturechangeinanaerialoptoelectronicsensor
AT wangxin designandoptimizationformountingprimarymirrorwithreducedsensitivitytotemperaturechangeinanaerialoptoelectronicsensor